{"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0"},"t":{"sec":1750649114,"usec":709350},"freq":136975000,"burst_len_octets":13,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-4.366613,"noise_level":-14.458877,"freq_skew":1.690468,"avlc":{"src":{"addr":"4ACA6B","type":"Aircraft","status":"Airborne"},"dst":{"addr":"1094FA","type":"Ground station"},"cr":"Response","frame_type":"S","cmd":"Receive Ready","pf":false,"rseq":0}}}
{"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0"},"t":{"sec":1750649117,"usec":712510},"freq":136975000,"burst_len_octets":17,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-3.900902,"noise_level":-15.861307,"freq_skew":1.632239,"avlc":{"src":{"addr":"48AF02","type":"Aircraft","status":"Airborne"},"dst":{"addr":"109B3A","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":4,"sseq":4,"poll":false,"x25":{"err":false,"pkt_type":1,"pkt_type_name":"Receive Ready","chan_group":11,"chan_num":255,"rseq":2}}}}
{"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0"},"t":{"sec":1750649117,"usec":727669},"freq":136975000,"burst_len_octets":88,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-4.481108,"noise_level":-16.815067,"freq_skew":1.709945,"avlc":{"src":{"addr":"48AF02","type":"Aircraft","status":"Airborne"},"dst":{"addr":"109B3A","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":5,"sseq":4,"poll":false,"x25":{"err":false,"pkt_type":0,"pkt_type_name":"Data","chan_group":11,"chan_num":255,"sseq":7,"rseq":2,"more":false,"reasm_status":"skipped","clnp":{"err":false,"compressed":true,"local_ref_a":65,"priority":11,"lifetime":20.000000,"flags":246,"pdu_id":23,"cotp":{"pdu_list":[{"err":false,"tpdu_code":208,"tpdu_code_descr":"Connect Confirm","extended":false,"src_ref":54914,"dst_ref":7548,"credit":1,"proto_class":4,"options":0,"use_extended_pdu_formats":false,"variable_part_params":[{"name":"tpdu_size","value":1024},{"name":"called_responding_transport_selector","value":[22,0]},{"name":"calling_transport_selector","value":[99,112]},{"name":"priority","value":3},{"name":"ack_time_ms","value":1000},{"name":"inactivity_timer_ms","value":360000},{"name":"additional_options","value":[0]},{"name":"atn_checksum","value":[24,214,165,134]}]}],"x225_spdu":{"spdu_id":240,"spdu_type":"Short Accept","x227_apdu":{"acse_apdu":{"choice":"aare","data":{"assoc_response":{"app_ctx_name":[1,3,27,3,0],"assoc_result":{"value":0,"value_descr":"accept"}}}},"cpdlc":{}}}}}}}}}
{"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0"},"t":{"sec":1750649118,"usec":837476},"freq":136975000,"burst_len_octets":50,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-4.171931,"noise_level":-16.906921,"freq_skew":1.562798,"avlc":{"src":{"addr":"48AF02","type":"Aircraft","status":"Airborne"},"dst":{"addr":"109B3A","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":6,"sseq":5,"poll":false,"x25":{"err":false,"pkt_type":0,"pkt_type_name":"Data","chan_group":11,"chan_num":255,"sseq":0,"rseq":3,"more":false,"reasm_status":"skipped","clnp":{"err":false,"compressed":true,"local_ref_a":65,"priority":11,"lifetime":20.000000,"flags":246,"pdu_id":24,"cotp":{"pdu_list":[{"err":false,"tpdu_code":240,"tpdu_code_descr":"Data","extended":false,"dst_ref":7548,"sseq":0,"req_of_ack":0,"eot":1,"reasm_status":"skipped","variable_part_params":[{"name":"atn_checksum","value":[124,152,170,65]}]}],"cpdlc":{"atc_downlink_message":{"header":{"msg_id":0,"timestamp":{"date":{"year":2025,"month":6,"day":23},"time":{"hour":3,"min":25,"sec":17}},"logical_ack":"required"},"msg_data":{"msg_elements":[{"msg_element":{"choice_label":"CURRENT DATA AUTHORITY","choice":"dM99NULL","data":{}}}]}}}}}}}}}
{"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0"},"t":{"sec":1750649118,"usec":840271},"freq":136975000,"burst_len_octets":44,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-3.426835,"noise_level":-16.902081,"freq_skew":3.588287,"avlc":{"src":{"addr":"4B906C","type":"Aircraft","status":"Airborne"},"dst":{"addr":"109B3A","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":3,"sseq":2,"poll":false,"x25":{"err":false,"pkt_type":0,"pkt_type_name":"Data","chan_group":11,"chan_num":255,"sseq":6,"rseq":0,"more":false,"reasm_status":"skipped","clnp":{"err":false,"compressed":true,"local_ref_a":67,"priority":11,"lifetime":20.000000,"flags":246,"pdu_id":331,"cotp":{"pdu_list":[{"err":false,"tpdu_code":96,"tpdu_code_descr":"Data Ack","extended":false,"dst_ref":7540,"credit":2,"rseq":2,"variable_part_params":[{"name":"flow_control","value":{"acked_tpdu_nr":1,"acked_subseq":0,"acked_credit":2}},{"name":"atn_checksum","value":[183,150,100,206]}]}]}}}}}}
{"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0"},"t":{"sec":1750649120,"usec":411474},"freq":136975000,"burst_len_octets":49,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-4.153395,"noise_level":-17.492083,"freq_skew":1.556140,"avlc":{"src":{"addr":"48AF02","type":"Aircraft","status":"Airborne"},"dst":{"addr":"109B3A","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":7,"sseq":7,"poll":false,"x25":{"err":false,"pkt_type":1,"pkt_type_name":"Receive Ready","chan_group":11,"chan_num":255,"rseq":5}}}}
{"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0"},"t":{"sec":1750649120,"usec":411474},"freq":136975000,"burst_len_octets":49,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":1,"sig_level":-4.153395,"noise_level":-17.492083,"freq_skew":1.556140,"avlc":{"src":{"addr":"48AF02","type":"Aircraft","status":"Airborne"},"dst":{"addr":"109B3A","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":0,"sseq":7,"poll":false,"x25":{"err":false,"pkt_type":0,"pkt_type_name":"Data","chan_group":11,"chan_num":255,"sseq":1,"rseq":5,"more":false,"reasm_status":"skipped","clnp":{"err":false,"compressed":true,"local_ref_a":65,"priority":11,"lifetime":20.000000,"flags":246,"pdu_id":25,"cotp":{"pdu_list":[{"err":false,"tpdu_code":96,"tpdu_code_descr":"Data Ack","extended":false,"dst_ref":7548,"credit":2,"rseq":1,"variable_part_params":[{"name":"atn_checksum","value":[20,206,242,166]}]}]}}}}}}
{"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0"},"t":{"sec":1750649128,"usec":260697},"freq":136975000,"burst_len_octets":32,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-2.740327,"noise_level":-16.255062,"freq_skew":-0.533020,"avlc":{"src":{"addr":"7811F9","type":"Aircraft","status":"Airborne"},"dst":{"addr":"1094FA","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":7,"sseq":7,"poll":false,"x25":{"err":false,"pkt_type":0,"pkt_type_name":"Data","chan_group":11,"chan_num":255,"sseq":6,"rseq":6,"more":false,"reasm_status":"skipped","clnp":{"err":false,"compressed":true,"local_ref_a":1,"priority":11,"lifetime":50.000000,"flags":192,"pdu_id":30,"cotp":{"pdu_list":[{"err":false,"tpdu_code":96,"tpdu_code_descr":"Data Ack","extended":false,"dst_ref":30026,"credit":2,"rseq":1,"variable_part_params":[{"name":"checksum","value":[135,135]}]}]}}}}}}
{"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0"},"t":{"sec":1750649129,"usec":780643},"freq":136975000,"burst_len_octets":14,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-2.616382,"noise_level":-16.992447,"freq_skew":-0.676101,"avlc":{"src":{"addr":"7811F9","type":"Aircraft","status":"Airborne"},"dst":{"addr":"1094FA","type":"Ground station"},"cr":"Response","frame_type":"S","cmd":"Receive Ready","pf":false,"rseq":0}}}
{"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0"},"t":{"sec":1750649131,"usec":331681},"freq":136975000,"burst_len_octets":53,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-4.249258,"noise_level":-17.331955,"freq_skew":1.408171,"avlc":{"src":{"addr":"48AF02","type":"Aircraft","status":"Airborne"},"dst":{"addr":"109B3A","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":1,"sseq":7,"poll":false,"x25":{"err":false,"pkt_type":0,"pkt_type_name":"Data","chan_group":11,"chan_num":255,"sseq":2,"rseq":5,"more":false,"reasm_status":"skipped","clnp":{"err":false,"compressed":true,"local_ref_a":64,"priority":14,"lifetime":20.000000,"flags":246,"pdu_id":26,"idrp":{"err":false,"pdu_type":4,"pdu_type_name":"Keepalive","seq":3,"ack":2,"credit_offered":32,"credit_avail":4}}}}}}
{"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0"},"t":{"sec":1750649132,"usec":806697},"freq":136975000,"burst_len_octets":14,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-3.904466,"noise_level":-17.288801,"freq_skew":1.687388,"avlc":{"src":{"addr":"48AF02","type":"Aircraft","status":"Airborne"},"dst":{"addr":"109B3A","type":"Ground station"},"cr":"Response","frame_type":"S","cmd":"Selective Reject","pf":false,"rseq":7,"unknown_proto":{"data":[1]}}}}
{"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0"},"t":{"sec":1750649133,"usec":575772},"freq":136975000,"burst_len_octets":13,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-3.420362,"noise_level":-17.087719,"freq_skew":1.567185,"avlc":{"src":{"addr":"48AF02","type":"Aircraft","status":"Airborne"},"dst":{"addr":"109B3A","type":"Ground station"},"cr":"Response","frame_type":"S","cmd":"Receive Ready","pf":false,"rseq":1}}}
{"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0"},"t":{"sec":1750649140,"usec":445497},"freq":136975000,"burst_len_octets":55,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-4.348823,"noise_level":-16.360912,"freq_skew":0.086778,"avlc":{"src":{"addr":"781565","type":"Aircraft","status":"Airborne"},"dst":{"addr":"1094FA","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":1,"sseq":1,"poll":false,"acars":{"err":false,"crc_ok":true,"more":false,"reg":".B-303N","mode":"2","label":"SA","blk_id":"1","ack":"!","flight":"ZH0865","msg_num":"S38","msg_num_seq":"A","msg_text":"0LS032538VH","media-adv":{"err":false,"version":0,"current_link":{"code":"S","descr":"Default SATCOM","established":false,"time":{"hour":3,"min":25,"sec":38}},"links_avail":[{"code":"V","descr":"VHF ACARS"},{"code":"H","descr":"HF"}]}}}}}
{"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0"},"t":{"sec":1750649141,"usec":208681},"freq":136975000,"burst_len_octets":53,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-2.815972,"noise_level":-16.823147,"freq_skew":-0.813934,"avlc":{"src":{"addr":"7811F9","type":"Aircraft","status":"Airborne"},"dst":{"addr":"1094FA","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":0,"sseq":0,"poll":false,"x25":{"err":false,"pkt_type":0,"pkt_type_name":"Data","chan_group":11,"chan_num":255,"sseq":7,"rseq":7,"more":false,"reasm_status":"skipped","clnp":{"err":false,"compressed":true,"local_ref_a":64,"priority":14,"lifetime":50.000000,"flags":192,"pdu_id":31,"idrp":{"err":false,"pdu_type":4,"pdu_type_name":"Keepalive","seq":3,"ack":2,"credit_offered":5,"credit_avail":4}}}}}}
{"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0"},"t":{"sec":1750649141,"usec":212051},"freq":136975000,"burst_len_octets":13,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-3.952172,"noise_level":-17.400677,"freq_skew":0.141013,"avlc":{"src":{"addr":"781565","type":"Aircraft","status":"Airborne"},"dst":{"addr":"1094FA","type":"Ground station"},"cr":"Response","frame_type":"S","cmd":"Receive Ready","pf":false,"rseq":2}}}
{"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0"},"t":{"sec":1750649143,"usec":506388},"freq":136975000,"burst_len_octets":14,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-2.488355,"noise_level":-17.475704,"freq_skew":-0.716433,"avlc":{"src":{"addr":"7811F9","type":"Aircraft","status":"Airborne"},"dst":{"addr":"1094FA","type":"Ground station"},"cr":"Response","frame_type":"S","cmd":"Receive Ready","pf":false,"rseq":1}}}
{"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0"},"t":{"sec":1750649143,"usec":506943},"freq":136975000,"burst_len_octets":53,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-3.218134,"noise_level":-17.771910,"freq_skew":0.233402,"avlc":{"src":{"addr":"7815FA","type":"Aircraft","status":"Airborne"},"dst":{"addr":"1094FA","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":4,"sseq":0,"poll":false,"x25":{"err":false,"pkt_type":0,"pkt_type_name":"Data","chan_group":11,"chan_num":255,"sseq":6,"rseq":2,"more":false,"reasm_status":"skipped","clnp":{"err":false,"compressed":true,"local_ref_a":64,"priority":14,"lifetime":50.000000,"flags":192,"pdu_id":38,"idrp":{"err":false,"pdu_type":4,"pdu_type_name":"Keepalive","seq":3,"ack":2,"credit_offered":5,"credit_avail":4}}}}}}